{
  "manageEntity": {
    "action": "Save",
    "entityId": "364396",
    "entityType": "Track",
    "nonce": "0x9e26d0406ace21a08257a431495e009d98301f52e8d61c80897700faaaa75312",
    "signature": "0x9ec89702d61f8eb60827a33620718c7f56156494487e1c4d12fb923bbda80a304fc05dc40cf964964120ff09a83cc41d926c89538fe98aa54606ca7c232a8df51c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}